Question

Why laser light is monochromatic in nature?



•Give logical and satisfied answer....and not copied from Google...​

Answer 1

Answer:

the light emitted by a laser pointer is naturally monochromatic. In addition, the light is coherent: trains of wave emitted between them are "in phase". ... The light emitted by a standard laser is restricted to a narrow range of wavelength.

Answer 2

This is because it's a combination of two things:

• Stimulated emission involves Laser gain medium that has some particular excited states that like to transition down to particular lower states. You typically chose a LGM with a fairly clean set of states so it will only amplify particular wavelengths.

• To maximize the chance the LGM has to amplify the light, you typically build an Optical cavity there has to be an integral number of wavelengths in a round trip.